Re: [amsat-bb] Whence satgates?

[Bob Bruninga <bruninga@xxxxxxxx>]

> This is an excerpt from this months Satgate report written by Andrew G8TZJ,
> was downloaded from UO-22
>
> = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =  = = = = = =
> This has lead a couple of satgates to ask what will happen when UO-22 goes
> QRT for ever. I welcome input from all of you on this subject and I see
> these as the possibilities;

Another possibility is to QSY to many of the other UI digipeating
satellites and IGate all packets heard into the Internet.  These are all
the satelites which have or will have AX.25 baud UI downlinks contining
much user messages and data:

ISS      1200 baud on 145.800  Working great
PCsat    1200 baud on 145.825  Working great (somketimes sun only)
OPAL     9600 baud on 437.1    Needs to be checked
Sapphire 1200 baud up on 145.945 and down on 437.1

Satellites in development:
PCsat2      1200 baud on 145.825
            9600 baud on 145.825
ISS Phase 2 1200 and 9600 baud on 145.800 (or other)
ANDE        1200 baud on 145.825
CRAFT       1200 baud on 145.825
Cubesats??? TBD

So there are many AX.25 downlinks that need to be monitored and fed live
into the Internet for worldwide distribution.  Some of these dowlinks can
work well with OMNI antennas on the ground.  Others need tracking
antennas.  Those that need tracking antennnas are the ones that are best
served by PACSAT SATGate type statiuons because they already have the
tracking systems...

 de WB4APR@amsat.org, Bob

See    http://www.ew.usna.edu/~bruninga/astars.html

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